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Lana71 [14]
3 years ago
10

T/F. When a molecule contains three bonds and a single lone pair attached to the central atom, the molecular geometry is trigona

l planar.
Chemistry
1 answer:
lesantik [10]3 years ago
7 0

Answer:

False

Explanation:

In chemistry, trigonal planar is a molecular geometry model with one atom at the center and three atoms at the corners of an equilateral triangle, called peripheral atoms, all in one plane. In an ideal trigonal planar species, all three ligands are identical and all bond angles are 120°.

Meaning there shouldn't be any lone pair.

Look up "Structure of a trigonal planar molecule" for a visual

So it is false.

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In the three-dimensional structure of methane, ch4, the hydrogen atoms attached to a carbon atom are aligned ________. in the th
Nikitich [7]
Answer:
            In the three-dimensional structure of methane, CH₄, the hydrogen atoms attached to a carbon atom are aligned <span><u>at the corners of a Tetrahedron</u>.

Explanation:
                   In Methane (CH</span>₄) the central atom (carbon) is bonded to four hydrogen atoms. So, the central atom is having four electron pairs and all pairs are bonding pairs and lacks any lone pair of electron. According to Valence Shell Electron Pair Repulsion (VSEPR) Theory the central atom with four bonding pair electrons and zero lone pair electrons will attain a tetrahedral geometry with bond angles of 109°. Hence, the shape of CH₄ is tetrahedral.

4 0
3 years ago
Why is pluto classified as a dwarf planet?
Julli [10]

Answer:

pluto is considered a dwarf planet because it did not meet the three criteria the IAU uses to define a full sized planet

Explanation:

5 0
3 years ago
The lecturer compared the humans eye to a camera lens
Ilya [14]
An analogy is the closest way to compare something to another that may not be related so that would be my pick. If that’s not it I guess he could maybe be making an observational opinion about it? Good luck hope this helped. Analogy
5 0
3 years ago
What is the concentration of each ion in a solution that is prepared by dissolving 5.00 g of ammonium chloride in enough water t
sukhopar [10]

The concentration of each ion in the solution of ammonium chloride is:

  • NH₄⁺ = 0.1886 M
  • Cl⁻ = 0.1886 M

To solve this problem, the formulas and the procedures that we have to use are:

  • M = n(solute)/v(solution) L
  • n = m / MW
  • MW= ∑ AWT

Where:

  • M= molarity
  • n = moles
  • m = mass
  • v = volume
  • MW = molecular weight
  • AWT = atomic weight

Information about the problem:

  • m(NH₄Cl) = 5 g
  • v(solution) = 500 ml
  • AWT (N)= 14 g/mol
  • AWT (H)= 1 g/mol
  • AWT (Cl) = 35 g/mol

Converting the volume units from (ml) to (L) we have:

v(solution) = 500 ml * (1 L/1000 ml)

v(solution) = 0,50 L

We calculate the moles of the NH₄Cl from the MW:

MW = ∑ AWT

MW (NH₄Cl)= AWT (N) + AWT (H)*4 + AWT (Cl)

MW (NH₄Cl)= 14 g/mol +( 1 g/mol * 4) + 35 g/mol

MW (NH₄Cl)= 14 g/mol + 4 g/mol + 35 g/mol

MW (NH₄Cl)= 53 g/mol

Having the MW we calculate the moles of NH₄Cl:

n(NH₄Cl) = m(NH₄Cl) / MW(NH₄Cl)

n(NH₄Cl) = m(H2SO4) / MW (H2SO4)

n(NH₄Cl) =  5 g / 53 g/mol

n(NH₄Cl) = 0.0943 mol

Applying the molarity formula, we get:

M(NH₄Cl) = n(NH₄Cl)/v(solution) L

M(NH₄Cl) = 0.0943 mol / 0,50 L

M(NH₄Cl) = 0.1886 M

There are 0.1886 moles of NH₄Cl per liter of solution.

Let's recognize that 1 mol NH₄Cl contains:

  • 1 mol NH₄⁺
  • 1 mol Cl⁻

The concentration of each ion is thus:

(1)*(0.1886 M) = 0.1886 M NH₄⁺

(1)*(0.1886 M) = 0.1886 M Cl⁻

<h3>What is a solution?</h3>

In chemistry a solution is known as a homogeneous mixture of two or more components called:

  • Solvent
  • Solute

Learn more about chemical solution at: brainly.com/question/13182946 and brainly.com/question/25326161

#SPJ4

4 0
2 years ago
In an ionic bond, Select one:
Elena-2011 [213]

Answer:

A

Explanation:

B - Can't be - Ionic bonds are formed by oppositely charged ions

C - Can't be - This is a covalent bond

D - Can't be - This is an induced dipole or a van Der waals attraction

E - This is a permanent dipole dipole attraction

8 0
4 years ago
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